From: Jon Harrop <jon@ffconsultancy.com>
To: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] a question about recursiv type defintions and functors like Set.Make?
Date: Mon, 21 May 2007 16:52:10 +0100 [thread overview]
Message-ID: <200705211652.10723.jon@ffconsultancy.com> (raw)
In-Reply-To: <4651B460.60408@informatik.uni-freiburg.de>
On Monday 21 May 2007 16:01:52 Phillip Heidegger wrote:
> I have a question about using the set functor.
This is a FAQ. From a post of mine (on 1st May 2007) on the OCaml beginners
list:
Use mutually recursive modules:
# module rec Tree : sig
type t = Content of int * TreeSet.t
val compare : t -> t -> int
end = struct
type t = Content of int * TreeSet.t
let compare = compare
end
and TreeSet : Set.S = Set.Make(Tree);;
sig type t = Content of int * TreeSet.t val compare : t -> t -> int end
and TreeSet : Set.S
--
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
The F#.NET Journal
http://www.ffconsultancy.com/products/fsharp_journal/?e
next prev parent reply other threads:[~2007-05-21 15:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-21 15:01 Phillip Heidegger
2007-05-21 15:52 ` Jon Harrop [this message]
2007-05-21 16:42 ` [Caml-list] " Phillip Heidegger
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